2,7-(epoxy[1,11,13]pentadecatrienoimino)naphtho[2,1-b]furan-1,11(2H)-dione, 21-(acetyloxy)-8-[[(E)-(2,4-dinitrophenyl)azo]methyl]-5,6,9,17,19-pentahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-, (2S,16S,17S,18R,19R,20R,21S,22R,23S)- 3-(2,4-Dinitrophenylhydrazonemethyl)rifamycin SV AIDS-114442 AIDS114442